Any ideas for games and activities for a 1 year old and 4 year old to do together?

[jinglesticks]

Before dd2 came along dd1 and I had great fun; craft, baking, board games, role play etc. but it is really hard to do any of this with dd2 around! Has anyone discovered any fun activities that work with different ages?
Thanks for any advice

Cafés.

Painting. My 1 yr old got bored and walked off to play with someone else. If yours wants to actually do it, she may need the majority of the supervision.

Give toddler to husband, bake with the elder.

Put large cardboard box in middle of floor. Entertained my two for about three hours, the little weirdos.

Yes, den building seems to be the only activity they can enjoy together.
Cheers for suggestions

Playdoh